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May 13, 1924. Re. 15,840

H. C. RIEHLE EXPANSION JOINT Original Filed June 7, 1918 UNITED STA may c. mm,

Rei -15,840

or no onovn, more, assmxoa 'ro s'rmm asrmwr.

' & G (mom, CHICAGO, 1114180118, A COBIORATION 0! DELAWARE.

mansion mm.

" struction generally, and particularly to a.

novel and improved construction of filler adapted to be placed inposition between adjacent portions or elements ofthe surll face of the pavement to close the joints or intervening spaces, while permitting the ortions or e ements ofthe pavement to ave proper relative movements to com-- pensate for expansion and contraction.

, One object of my invention is to provide an expansion joint filler which combines all of the advantages of the built up or sandwich 'oint and the solid asphalt joint, while free mm the defects of both, and which is sufliciently stifl and rigid to maintain its shape and the integrity of the joint, and

substantial enough to screed to, anc which is furthermore, adapted to rivet or adhere to the sides of the ]oint and seal the same to secure] against the entrance of moisture and ot er foreign substances.

Another object of the invention is to provide a prepared or preformed filler which may be conveniently handled. packed and ,5 shipped, and which is especially adapted to form a durable and even-surface which will allow the wheels of vehicles to pass smoothly and easily over the joints,

The invention consists of the features of construction, combination and arrangement of parts, hereinafter fully described and I claimed, reference being had to the accompanying drawing, in which i Fig. 1 is a perspective view of a section in accor ance with my invention.

Fig. 2 is, a vertical transverse section thereof. V

Fig. 3 is a vertical section through adjacent elements of a pavement at a joint. show: ing the.filler placed in a position and as it ap rs revious to the ironing down of its masha le head or top.

Fig. 4 is a view similar to Fig. 3, show- 4 of an ex ansion joint filler strip constructed sruu Io. fled Iunc 1, 1910. Application (or reissue fled-'Iovemb'er :1, 1020. mm n. ceases.

- ing the mashable head or to of the filler ironed down to close and sea the joint.

Referring to drawing, 1 and 2' represent the adjacent strips o'r slabs of a pavement,- which may be of concrete, stone, or other material, and which are provided between their 00 adjacent surfaces with an intervening space 3 to permit the pavement sections or elements to have proper movement to compensate for expansion and contraction. Ordinarilythese joints or spaces are filled with a joint'filling material of a character designed to seal the spaces while permitting o proper relative movementof the pavement sections or elements.

The object of my invention is to provide a preformed joint filler of novel construction, adapted to be placed in the spaces or joints between adjacent pavement sections topermit relative movement thereof, while at the'same time sealing the joint against theentrance of moisture or other foreign materials and providing a proper wearing surface across the top of the joint. As shown in the present instance, the juxtaposed sides or walls 4 and 5 of the pavement sections 1 and 2 are preferably beveled or chamfered at their upper edges, as indicated at 6, to provide for the better reception of the fillingmaterial and to secure close adhesiom between such material and the pavement sections, as hereinafter fully vdescribed.

The joint filler 7 provided, in accordance with my invention, consists of a strip or slab of rectangular or oblong rectangular form, of a width according substantially with the width of the joint space 3, and of a length or depth slightly greater than said joint space. This joint filler strip is of composite construction, consisting of a body 8 of a suitable elastic and adhesive material and layers 9 of an elastic and protective material disposed on op osite sides thereof.

In practice, the body of elasticand adhesive material may consist-of a combination of asphalt and aninert substance, such, for instance, as a substantially pure asphaltic bitumen and finely divided particles of infusorial earth, combined in proper pro ortions to form a mass sufi'nciently rigi or solid to maintain its shape and sufliciently plastic and flexible so as to spread under j conform to the shape of a joint. As shown,

laterall e l .the

the asphaltic the protective layers9arelaid. into recesses formed in the sides of the body 8, which and layers 9- are of less length than the same thickness throughout.

vThe layers 9 are preferably made of a suitable elastic, fibrous material, such as felt, and the purpose of these layersis to permit and provide for ample elasticity to adapt the filler to snugly fill the space 3 and allow-expansion and contraction of the paving elements L and 2, while at the same time reinforcing'the asphaltic body and rendering thefiller strip capable of being handied and shipped with convenience, by the will will be evident that construction described, whereby the filler strip is made of uniform width orthickness om end to end, a number of such strips may be easily and conveniently laid upon one another and packed for storage or shipment in a .ready and compact manner, as will be readily understood.

In employing the joint filler, the filler is placed in position so that the felt layers 9 terminate one inch more or less below the surface of the pavement sections 1 and '2, and so that the lower portion of thehead .10 will lie below said surface, per

while. the upwill project a an inch, more orless, Whenfso disposed it the side faces of the lower portion of the head 10will lie in direct contact'with the walls 4 and 5 of the.

portion of the head,10 sufliclent distance, above said surface.

. space 3-it a point just below the surface of t e wheels of 'vecles pavement and will adhere thereto," and that when the'projecting portion of the head .18 mashed down or compressed it will be laterally read so as to lap over the chamfered "su aces 6 and thus effectually seal the joint.

In practice the projecting portion of the head 10 may be compressed or ironed down by means of a suitable tool, or may be left to be comp or ironed down by the pasing over the completed pavement; In either case the head will be com acted and spread laterally and caused to adhere to the corners of the walls 4 and 51nd to the adjacent surfaces of-the walls down .to the line of the upper edgesof the felt layers 9, while the-crown of the head will also be expanded laterally soas body. Th asphaltic s y is I Y .head or- -when .this. form of tinuousl 'suring't e compression of the material into .phaltic body pavement, the

to arch over the top of thejoint and lap over "upon the upper faces of the pavement elements land 2, thus making a continuous i a tread. over the surface of the joint for the smooth passage of rolling trafiic. An important feature of my 'inventlon resides in the form and construction of the filler strip. -As this head or projecting top,

w owing to its lateral expansionnor' increased width, contains a considerable amount ofthe asphalt material,- it will be understood that when the, head .is crushed or ironed down all adjacent surfaceswill be filled with the asphaltic materiahwhich also will adhere strongly to the sides of the joint,"

thussealing thejoint securely against the projectingend 10"of the composite Y access of moisture and'other foreign substances. -Furthermore, when this excess' materialof the head is compacted, in the will be established Another important-advantageof the described construction is that head is compressed it -manner shown in Fig. 4, a tread surface of r maximum durability and resistanceto wear.

will be spread orarched over the surfaceof c the joint substantially in the form of amushroom head, thereby providing a con-' smooth surface over the joint, en-

all joints under the pressure of traflic and a constant sealing of the jointsvunder all conditions of I It will be observed that are gained not only by the' provision of a head 10 of the form terminating the felt or compressed fibre lay-.

material. terminate below the top of the pavement surface, these or interference to'the ironing of the asthe walls of the joint, as would occur if the layers projected aboveithe surface of the pavement. Furthermore, the. layers are disposed at such a point that they will not of traflic,'

wheels torn or damaged by the intact and and will therefore always remain permanently hold the asphaltic body stif" fened to the desired degree. If the felt layers projected above the pavement, it will 7 be obvious that't-heir edges would be torn by the wheels of vehicles, and that they would not only present an unsightly appearance, but would prevent compresion of the head and adhesion of projectingedges of the felt also producing lumps causing and jolting of the vehicles in their rave across thejolnts.

described, but also by these advantages ers 9 below the top of the body of asphaltic By also having these felt layers layers oppose any resistance down into direct contact with H the head to the,

It will, of course, be understood that the fillerstripsor-slabs maybe made of any suitable thickness or length according to requirements, and it will be evidentfrom the foregoing that my improved joint combines all of the advantages of the built up or able initial wear and tear before the asphaltic material at the top of the joint is compressed into the plane of the pavement surface. x

Having fully described my invention, I claim -1 An expansion joint filler comprising a body of asphaltic material of greater initial depth than the depth of adjacent pavement elements between which it is fitted, said block having layers of thin protective material upon its opposite faces to lie between the same and said pavement elements,

said layers being arranged to terminate a substantial distance below the wear, surfaces of the pavement elementsand below the top of the block, leaving portions of the top of the block exposed for adhering contact with the adjacent faces of the pavement elements adjacent to and for a substantial distance below the wear surface of said pavement elements.

2. An expansion joint filler comprising a body of asphaltic material of a depth to project above the wear surfaces of adjacent 'pavin elements between which it is fitted, said b ock having a head portion of greater thickness than the body of the block and arra the a jacent faces of said paving elements adjacent to and a substantial distance below the wear surfaces of said elements, and protective layers of thin material upon the, sides of the block and arranged to lie between the same and said faces of the adjacent paving elements below the points of contact between the same and the head portion of the block.

3. An expansion joint 'filler comprising a body of asphaltic material having a head portion of substantial depth and of greater thickness than the body of the block and projecting laterally beyond the oppositev aces thereof, and thin ayers of protective material embedded in the side faces of the ed to contact with and adhere to ture.

body of the block and lying below the laterally projecting surfaces of the head portion thereof.

4. An expansion joint filler comprising a thin slab of asphaltic material adapted to be placed in position between adjacent parts of a pavement to close the joint thereetween, and having a depth to project above the wear surfaces of the adjacent pavement parts between which it is fitted, said slab having a head portion of greater thickness than the body of the slab, and arranged to contact with and adhere to the adjacent faces of said pavement parts adjacent thereto, and a substantial distance below the wear surface of the said pavement, and protective layers of thin mate-rial secured to the sides of the slab and arranged to lie between the slab and wear surfaces of the adjacent pavement parts below the points of contact between the same, and the head portion of the slab.

5. An expansion joint filler comprising athin slab of asphaltic material adapted to be placed in position between adjacent parts of a pavement to close the joints therebetweem'and having a head portion of substantial depth and of greater thickness than the body of the slab, and projecting laterally beyond the opposite faces thereof, and thin layers of protective material embedded in the side faces of the body of the slab and lying below the laterally projecting surfaces of the head portion thereof. a

6. Am expansion joint filler comprising a body of plastic material of greater initial depth than the depth of the adjacent elements between which it is fitted, said body having a layer of thin protective material upon ,its face to lie between the same and the next adjacent element, said layer being arranged to terminate a substantial distance below the top surface of said next adjacent element and below the top ofthe body, leaving portions of the side of the body exposed for adhering contact with the adjacent face of said nextadjacent element to and for a substantial distance below the surface of said element.

In testimony whereof I ailix my signa- HENRY o. RIEHLE. 

